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| author | Sujith <Sujith.Manoharan@atheros.com> | 2009-03-17 08:50:06 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-03-27 20:12:55 -0400 |
| commit | 722f069a6dc95d7c6c2cdfbe3413899a3b768f9c (patch) | |
| tree | 3f9ccbd9e2fdf75bd27675c48b238adc911ae626 /net/mac80211/pm.c | |
| parent | e23a9014fd4d502a419255a83e2479ab804c6f16 (diff) | |
| download | kernel_samsung_smdk4412-722f069a6dc95d7c6c2cdfbe3413899a3b768f9c.zip kernel_samsung_smdk4412-722f069a6dc95d7c6c2cdfbe3413899a3b768f9c.tar.gz kernel_samsung_smdk4412-722f069a6dc95d7c6c2cdfbe3413899a3b768f9c.tar.bz2 | |
mac80211: Tear down aggregation sessions for suspend/resume
When the driver has been notified with a STA_REMOVE, it tears down
the internal ADDBA state. On resume, trying to initiate aggregation would
fail because mac80211 has not cleared the operational state for that <TID,STA>.
This can be fixed by tearing down the existing sessions on a suspend.
Also, the driver can initiate a new BA session when suspend is in progress.
This is fixed by marking the station as being in suspend state and
denying ADDBA requests for such STAs.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/pm.c')
| -rw-r--r-- | net/mac80211/pm.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index ef7be1c..1e6152a 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -21,6 +21,19 @@ int __ieee80211_suspend(struct ieee80211_hw *hw) list_for_each_entry(sdata, &local->interfaces, list) ieee80211_disable_keys(sdata); + /* Tear down aggregation sessions */ + + rcu_read_lock(); + + if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { + list_for_each_entry_rcu(sta, &local->sta_list, list) { + set_sta_flags(sta, WLAN_STA_SUSPEND); + ieee80211_sta_tear_down_BA_sessions(sta); + } + } + + rcu_read_unlock(); + /* remove STAs */ if (local->ops->sta_notify) { spin_lock_irqsave(&local->sta_lock, flags); @@ -102,6 +115,18 @@ int __ieee80211_resume(struct ieee80211_hw *hw) spin_unlock_irqrestore(&local->sta_lock, flags); } + /* Clear Suspend state so that ADDBA requests can be processed */ + + rcu_read_lock(); + + if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { + list_for_each_entry_rcu(sta, &local->sta_list, list) { + clear_sta_flags(sta, WLAN_STA_SUSPEND); + } + } + + rcu_read_unlock(); + /* add back keys */ list_for_each_entry(sdata, &local->interfaces, list) if (netif_running(sdata->dev)) |